thanks, I will give it a shot, bleached the insert last night.... one point I will raise for those trying this at home... check the paint, I left it in for a couple of minutes and nothing seemed to be happening, then a couple more and finally noticed a slight tint to the bleach, thought this is going to take for ever. Just to check I took the insert out and slid my finger across it and my finger turned black. In other words the paint was coming off in the bleach, but basically just turning to liquid black and not "moving" if that makes sense.
Going to run the case through the washing machine as well when I get a chance